Dump-car.



PATBNTED FEB. 3, 1903 H. s. HART..

DUMP UAR.

APPLICATION FILED FEB. 10. 1902.

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No. 7,19,795.- I V PATENTED FEB. 3, 190's.

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DUMP GAR.

APPLICATION FILED 113.10, 1902.

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- BATENTED FEB. 3, 1903. H; s. HART.

DUMP GAR.

APPLICATION FILED FEB. 10, 1902.

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No. 719,795. PATENTED-FEB. 3, 1903.-

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DUMP CAR.

APPLICATION FILED FEB. 10, 1902.

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UNITED STATES I PATENT OFFICE.

HARRYSTILLSON HART, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL COAL DUMP CAR COMPANY, OF RAPID CITY, SOUTH DAKOTA, A CORPO' RATION' on SOUTH DAKOTA.

DUMP-CAR.

SPECIFICATION forming part of Letters Patent No. 719,7 95, dated February 3, 1903.

Application filed February 10, 1902- Serial No. 93,389. (No model.)

T 00% whom it nuty concern:

Be it known that I, HARRY STILLsoN HART, a citizen of the United States, residing at Chicago, in the county of Cook and State of lilinois, have invented certain new and useful Improvements in Dump-Oars, of which the following is a specification.

This invention relates to that class of cars known as dump-cars-that is, gondola 1o carsprovided with flat bottoms and side and end boards and a dumping-hopper bottom, all of which will more fully hereinafter appear.

The principal object ofthe invention is to provide a simple, economical, and efficient dump-car of such construction and arrangement that it may have all the advantages of a flat-bottom gondola and an A-shaped dumplug-car. I I

A further object of the invention is to provide a car of the class described with means for protecting the chain or other device by which the bottom of the car is operated.

Further objects of the invention will appear from an examination of the drawings and the following description and claims.

The invention consists,primarily,in a du mpcar in which there are combined a supporting-frame portion provided with side and end boards, an Ashaped central portion arranged in two planeshigh and low-and provided with foldable doors pivotally connected thereto and extending out therefrom, and means for operating these doors by which they may be made to form fiat-bottom portions or in 3 5 clined dumping-boards, respectively.

The invention consists,fnrther and finally, in the features, combinations, and details of construction hereinafter described and claimed.

0 In the accompanying drawings, Figure 1 is a plan view of one end of a car constructed in accordance with these improvements,showing the foldable portions on one side arranged in a horizontal plane and those on the other side laid in an inclined plane looking at it from above; Fig. 2, a longitudinal sectional view of the same, taken on line 2 of Fig. 1 looking in the direction of the arrow; Fig. 3, a cross-sectional View taken on line 3 of Fig.

1 looking in the direction of the arrow; Fig.

Fig. 1; Fig. 7, perspective details of the hinges by which the fold-able parts are swung into and out of position; Fig. 8, a cross-sectional view similar to that shown in Fig. 3, with a modified form of housing to protect the rock- .shaft; Fig. 9, a cross-sectional view similar to that shown in Fig. 4:, illustrating a modified form of housing; Fig. 10, a plan detail ofone side of the car as it appears when constructed similar to that shown in Figs. 8 and 9; Fig. 11, a sectional elevation of a portion of the mechanism, showing the inside of one of the side boards, taken on line 11 of Fig. 8 looking in the direction of the arrow; and Fig. 12, a side elevation of the supporting-framework, side boards, and rock-shaft of Fig. 11 looking at the parts from the outside.

In the art to which this invention relates it is well known that it is desirable to provide a dumping-car which will discharge all of the material through the bottom and down inclined bottom portions both from above the trucks and from the part between the trucks. It is also desirable to so construct and arrange the parts as to provide large dischargeopenings and keep the center of gravity of the car as close to the track as possible. It is further desirable to protect the locking and foperating mechanisms as much as possible from the destructive action of the load during the transportation of the car. To accomplish these ends, this invention is primarily designed, all ofwhich will be more fully hereinafter set forth. I o

'In-constructing a car in accordance with these improvements I provide supportingframework formed of the side sills at, end sills b, cross-sills o, and intermediate and center sills d and 6, upon and to which are secured the side boards f and the end boards g.

To provide a bottom for the car which will carry almost any desirable kind of freight and permit of the discharge of certain kinds, such as ballast or coal, by means of such bottom 10o and in an automatic manner both above and between the trucks and to the outside-of the usual car-tracks, I provide a bottom portion, formed in three central apex or A-shaped sections and which occupy what I prefer to term high and low levelsthat is, the apexes h at the ends of the car. Those arranged over and above the trucks are at high levels, while the apex 'i, arranged between the trucks, is at a lower level, and all are substantially in line with the longitudinal center of the car.

Pivotally secured to the framework of the car, substantially at what might be termed the floor-level thereof and so as to form practically continuations of the A-shaped apex portions, are a plurality of doors j and k at each side of the car, which doors, as above suggested, are pivoted, so that their free ends extend outwardly and when dropped into the position shown in Figs. 3, 4, 8, and 9 form substantial continuations of the central apex portions and inclined dumping-boards. this arrangement it will be seen that material the entire length of the car may be discharged to a point or points outside of the supportingtracks and that the center of gravity is maintained at as low a point as possible. These doors can also be folded or swung upwardly to occupy a horizontal plane and flat bottom portion of the car, thereby permitting the transportation of any kind of freight desired.

To open and close the doors, rotatable shafts l are provided, one arranged at each side of the car and supported in suitable bearings just inside of the side boards thereof. Gonmeeting-chains m are provided and secured to such shafts and to the ends of the swinging doors, so that as such shafts are rotated the chains are wound around them and the doors raised thereby. When such shafts are rotated in an opposite manner, the doors are permitted to drop and open by the weight of the load contained within the car or gravity. As these shafts and chains are arranged on the inside of the car, it is desirable that they should be protected from the injurious action of the freight, particularly ballast and coal, which would otherwise tend to obstruct the free operation thereof, as well as subject them to an injurious and unnecessary wearing action. To prevent this, housings n are provided, preferably formed, as shown in Fig. 5, of a metallic frame portion, which also provides bearings for the rotatable shafts and a hood for protecting the chain from the wearing and other actions of the load.

In Figs. 8, 9, 10, '11, and 12 I have shown these housings or hoods as formed of boards and running the entire length of the car between the side stakes or posts q. Either of these forms of protecting-hoods may be used, according to the economy of manufacture or desireof the user.

It is well known that usually the side sills of cars are arranged below the floor-level, and if such were the arrangement in this construction the size of the discharge-opening I provide the side sills a, above referred to,

and arrange them above the floor-level and on the cross-sills or timbers c, as shown in the drawings, which provides for maximum discharge-openings.

I claim- 1. In a dump-car of the class described, the combination of a supporting-frame provided with side and end boards, a dumping-bottom portion formed of central A-shaped apexportions arranged in two horizontal planes, and swinging doors extending outwardly therefrom and forming a flat bottom of the car in one position and inclined dumping-boards in a second position, substantially as described.

2. In a dump-car of the class described, the combination of a supporting-frame portion provided with side and end boards, a dumping-bottom portion formed of central A-shaped apex portions arranged in two horizontal planes extending substantially the entire length of the car, and swinging boards pivotally secured thereto at the ordinary floorlevel and extending outwardlytherefrom to form flat bottom portions in one position and inclined dumping-boards in a second position, substantially as described.

3. In a dump-car of the class described, the combination of a supporting-frame portion provided with side and end boards, a dumping portion formed of central A-shaped apex portions arranged in difierent horizontal planes, the end sections of which are arranged in a high plane above and over the trucks of the car and the central section in alower plane between the trucks, and swinging boards pivotally secured thereto and extending out therefrom and forming flat bottom portions in one position and inclined dumping-boards in a second position, substantially as described.

4. In a dump-car of the class described, the combination of a supporting-frame portion provided with side and end boards, a dumping bottom portion formed of central A-shaped apex portions arranged in different horizontal planes, the end sections of which are arranged in a high plane above the trucks of the car and the central section in a lower plane between the trucks, swinging boards pivotally secured thereto and extending out therefrom and forming flat bottom portions in one position and inclined dumping-boards in a second position, a rotatable shaft arranged at each side of the car and inside of the side boards thereof, and a plurality of chains connecting the free ends of the dumping-boards with the rock-shafts, substantially as described.

5. In a dump-car of the class described, the combination of a supporting-frame portion provided with side and end boards, a dumping bottom portion having central A-shaped IIO apex portions extending horizontally over the trucks to the extreme ends of the car and swinging boards pivotally secured thereto and extending out therefrom throughout the entire length of the car and over the trucks to the extreme ends of the car-frame so as to form flat bottom portions in one position and inclined dumping-boards in another position, a rotatable or rock shaft arranged at each side of the car inside the side boards thereof and above the floor-level, a plurality of chains secured to the free ends of the dumpingboards and to the rotatable shafts, and hood mechanism arranged inside of the side boards surrounding the rotatable shaft and over its connection with the chain to protect the same, substantially as described.

6. In a dump-car of the class described, the combination of a supporting-frame portion having side sills arranged above the ordinary floor-level and provided with side and end boards, a dumping bottom portion formed of central A-shaped apex portions arranged centrally of the car and extending horizontally from end to end thereof over the trucks and swinging boards pivotally secured thereto and extending out therefrom throughout the entire length of the car and over the trucks,

and means for raising and lowering the swinging boards into a horizontal plane to form flat bottom portions in one position and into an inclined plane to form dumping-boards in another position, substantially as described.

7. In a dump-car of the class described, the combination of a supporting-frame having its side sills arranged above the ordinary floorlevel and provided with side and end boards, a dumping bottom portion formed of central A-shaped apex sections arranged in different horizontal planes, swinging boards pivotally secured thereto and extending out therefrom to form flat bottom portions in one position and inclined dumping-boards in another position, a rotatable shaft arranged on the inner side of each of the side boards, a plurality of chains connecting the free ends of the dumping-boards to its respective rotatable shaft, and hood mechanism arranged inside of the side boards surrounding the rotatable shaft at its point of connection with the connectingchains to protect the same, substantially as described.

HARRY STILLSON HART. Witnesses:

THOMAS F. SHERIDAN, HARRY IRWIN CROMER. 

